研究表明在完全循环加载过程中,由于残余应变的存在,马氏体相变应力随循环增加而减小。
The research results show martensite transformation stress decreases with an increase in cycle due to the residual strain during full cyclic loading.
采用非线性等参元三维有限元算法(FEM)成功地模拟了形状复杂的零件淬火过程中瞬态温度场、相变、应力和应变,获得直观的立体图象。
Three dimensional nonlinear and isoparameter FEM has been successfully used to simulate the transient temperature field, phase transformation, stress and strain of complex components during quenching.
结果表明,随着应变的增大,该合金相变滞后增宽,马氏体可逆转变量减少。
It is shown that the transformation hysteresis increases and the reversible martensite amount decreases as the increasing of the strain.
采取不同的相变模式产生不同的切变应变,合金获得不同的形状记忆效应。
The different transformation model can produce different shear strain, so they show different shape memory effect.
如果在冷却过程中发生正相变的时候停止冷却并加载,则加载应力-应变曲线只出现应力平台。
If the constrained thermal cycle stopped upon cooling while the forward martensitic transformation was in progress, the loading stress strain curves exhibited the stress plateau immediately.
在热模拟单向压缩实验中,通过形变参数的变化考察了Q 235碳素钢应变强化相变的基本规律及铁素体晶粒细化效果。
The characteristics of strain enhanced transformation and ferrite grain refinement are investigated under different processing parameters by thermal simulating tests of Q235 plain carbon steel.
AFM对马氏体相变形状应变特征的观测更直观、准确和真实。
The AFM observation of martensitic surface relief effect showed to be direct, accurate and vivid.
籍助于温度场-相变-应力和应变的有限元分析方法(FEM),实现了复杂形状工件淬火过程的计算机模拟。
Computer simulation on complicate shaped parts during quenching process has been realized by using FEM analysis of temperature field phase transformation-stress and strain.
利用背散射电子衍射取向成像技术分析了在热模拟单向压缩条件下Q235碳素钢应变强化相变中铁素体晶粒的取向(差)变化特点。
The microstructure evolution of Q235 plain carbon steel in multi-pass hot deformation was investigated by means of hot compression simulation.
结果表明,丝径的减小对丝的相变性能,如最大恢复应变、最大恢复应力等影响不大,但可显著提高其动作频率。
The results show that the decrease of the diameter of a wire can not affect its phase transformation properties, but its work frequency can be increased markedly.
结果表明,丝径的减小对丝的相变性能,如最大恢复应变、最大恢复应力等影响不大,但可显著提高其动作频率。
The results show that the decrease of the diameter of a wire can not affect its phase transformation properties, but its work frequency can be increased markedly.
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